Question

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Answer 1

Cos 30=√3/2
Tan 30=1/√3
Cosec 30=2
sin 2teta=sin 2×30=sin60=√3/2
Cos 3teta=cos 90=0

Answer 2

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Given That ∅ = 30°

a) Cos∅
= Cos30°
= √3/2 Ans.

b) tan∅
= tan30°
= 1/√3 Ans.

C) cosec∅
= Cosec30
= 2. Ans.

d) Sin2∅
= Sin (2×30)
= sin60
= √3/2 Ans.

e) cos3∅
= cos(3×30)
= cos90
= 0 Ans.
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#Ishan